Shock compensator



June 27, 1.933. J. M. KELLER SHOCK GOMPENSATOYR 2 Sheets-Sheet 1 FiledNov. 17

.1. Mv. KELLER SHOCK COMPENSATOR June 27, 1933.

Filed Nov. 17, 1930 2 sneeutssheet 2 INVENTOR.

ATTORNEYJ,

Patented June 2% i933 STATES renier KELLER, ory Baarn-avv'oon,4 oiiio ij snocir coivir'niisaroa l i Application tiled, November 17, 1930.Serial No. 496,118.

rlhis invention relates asindicated to a n n 9 7 shock compensator orshock signed to be used as aime ans interposed betiveen the relativel"movingl arts oi a vea Y Y LD bicle such as therame and the axle or 7 owheel supporting structure thereof, to sup# plei'nent the 'resiliente'l'lfect ot the springs nor- 1 inally supporting the body ot thevehicle, so

. over an abrupt pro] magnitude. f lt fis amonginvention tol provide anapparatus having all l that excessive shoci; to which the Wheelsupportii'ig'structure of the vehicle is subjected ivill not betransmitted toits tull 'extenty to the body of the vehicle. l

In order hat ashoclr compensator, orlsocalled shock absorber operate'ecientlylfor the purpose Jfor Which it isdesigned, it is necessary thatsuch compensator permit tree relative vmovement'between thebody of' theYvehicle andV the Wheel supporting structure thefshock'vvhen'theivheel:of the car passes ecticn Tin' the road or y drops into a sharp'depression ct'apprefciable the objectsl of this of the above nameddesirable characteristics, To the accomplishment of the foregoing.`

and related-ends,said invention,then, consists oit themeans'hereii'iater *fully described and Vparticularly pointed out 4inthe'fclaiins. The annexed drawings and the following escription settingforth in detail certain mechanism embodying the invention, closed meanscofistituting, however,but one ot the various mechanical forms in whichthev princinle'oi:I the invention may,beused.- i

ln said annexed drawings:

FiO. l is a part sectionahpart elevational view of one'iorm of theappMatusy comprising my invention; Fig. 2 is a sectional 'view absorberde-k .v4-4, in

elevational View of an, alternative torni et' body;` However, thecompensa- Idrical groove *means of abolt 8, port' for a shaft QYsWliichsuchdis-f f of the apparatus illustrated in'Fig,` l, takenA on a planesubstantiallyindicated by tlieline 2*-Y2; Fig. 3 isa plan vievv .oftheapparatus `illustrated in the previous iigures; Fig. a is a transverse.sectional View of the apparatus illustrated in th'e'previous figures,taken on i a lplane substantiallyindicated bythe line Fig. 2.; Fig. 5isv a part sectional part construction of the'apparatus .embodying theprinciples of myinventiong-Fig. 6 isa sectional view ol the apparatus:illustrated in rFi,g.`5,talren on a plane substantially indi-l cated onthe line'-6; Fig. 'Zv isa plank view of theV apparatus illustrated inFigsf and 6, and Fig.8 is afragmentary sectional view. ot aportion ofthe apparatus illustrated Fig. 7 taken on a plane substantially'indicated by the line 88.

Referring more specifically to the drawings andy more especially-toFigs. l to l both inclusive, the speciic rembodiment of the principlescomprising my yinvention as illus-v tra-tedv in these figures, consists.of a body member generally indicatedat l which has a substantiallytubular-portion 2,"and'a sube stantially rectangular portion 3; ,"Thevrectangularlportion 8 islclosed by removable cap a, such cap beingsecured tothe body'by suitable bolts or the like. The bodyportion 8 isAprovided with laterally extending lugs 5, by@ Which the apparatus may besuitably secured to the mounting block or like means n which theapparatus, is employed. 'The inner face of the closure cap 4:isvprovided with a transprovi ded therefor on the vehicle with verselyextending, substantially semicylin- 6, Whichgalong with a complelnentarygroove 4formed on the` juxtaposed face ofthe calp members 7 securedthereto by serves as abearing sup;

'from the body oiy the apparatusin va preterablytaperedportion l()adapted to Vreceive tlieactuating lever of the apparatus.l TheWalls'otthe bodyportion 3, rand cap member- 4 are providedWith-complemei'itary recesses for p'aclring'niaterialll which is axiallysupported insuch aperturesbymeans of a corrugated Washer 12mountedcoairially with protects laterallyV roadway, vand yet, when suchAwheel,strii'cture is's'ubject to a severey shock, the com-` pensator iseffective tofa'bsorb 4such shock, and'prevent the saineI from beingtransmitted from the wheel structure to the bodyof the A modification ofthe hereiiibefore-de scribed form "of construction, and in somerespects, the preferred form-ofsuch construction is illustrated inrFigs. to 8,'and consists of a tubular body portion 2 inass'ociationvwith a substantiallyrectangular body por* tion 3', which ris closed byla cover member 4 which is secured to -the body portion' r3r by f boltsor the like. This form of construction is identical in every otherrespect with-'the exception of the form o f construction of the meansinterconnecting the shaft Q and the piston ljj f j In this form ofconstructionthewrist pin 16 has oscillatably secured thereto anactuating member 35, which 'issubstantially in the .form of'aparallelogram having recesses 36,

37 and 38 formed in the corners thereof adapti ed to receiveand engageradially extendingv projections v39, preferably formed integrally withavhub o'r collar 40 keyed to the shaft 9. It will be understood that theportion 40 and its` associated arms i9 vmay bexformed integrally withthe shaft 9 instead' of being keyed thereto as is illustrated in thesefigures.

The advantage of'this form of construction resides in the fact that theaction of this apparatus more closely approaches the ideal conditionsrequiredthan does any form of construction heretofore employed. Thevari` ous relatively moving elements will, under normal circumstances,occupy the position illustrated in Fig. 1, so that upon any relativemovement of the Abody of the carkorV vehicle and the wheel 'supportingstructure thereof,

the shaft 9 will be permitted to rotate through a short arc withouteffecting any material the lever secured to the shaft 9 willresult thanin any forms of construction. theretofore employed. For this reason thislatter described form of construction most eliiciently'acconiplishes thepurpose? for which it is designed. The operation of the piston and itsassociated` fluid by-passing means inthis latter form of constructionisidenticallvvithY that first described, so that a furtherlconsideration thereof is believed unnecessary. A fur.

ther description ofthe principles comprising my invention is believedunnecessary for those familiar wth the art. Suflice'it to say thatnumerous changes may be madein the detail form of construction hereinillustratedV and described for purposes of convenience without departingfrom the underlying principles of my invention. i

Other modes of applying the principle of my'invention may be employedinstead of the vone explained, change being made as regards themechanism herein disclosed,provided Ythe means statedby any of thefollowing claims or` the equivalent of such stated means be j employed..

I therefore particularly point' out and vdistinctly claim as myinvention:

combination of a closed body; a shaft oscillatable uponrelative movementof vtwo parts of such vehicle, extending into said body ';V a

l. In a shockcompensator for vehicles,'the

piston reciproc'able in said body, dividing the j samein'to twocompartments; means interconnecting said shaft 'and piston; relief valvemeans retarding the flow of fluid from oneof suoli compartments to theother; 'and means associated with said relief valve means for projectinga. stream of such 'fluid over the working partsin said body; l 2. Inashock compensator for vehicles, the

combination of a closed body; a shaft oscillatj able upon relativemovement of two parts of piston reciprocable in said body, dividing thesame in to two, compartments; means interconnecting said shaft andpiston; relief valve `4means respectively admitting fluid flow fromeither chamber to the other upon selective movement of said piston; andmeans associated with said relief valve means for projecting a stream ofsuch fluid over the working parts in said body. l

l 3. In a shock compensator, the combination 105 of a housing vincludinga cylinder, an oscillatable shaft; a piston in said cylinder axiallyoscillatable upon oscillation of said shaft;

'such vehicle, extending into said body; a 'y and means interconnectingsaid piston and shaft, said means including a framepivotally securedtosaidpiston and provided with three bearing recesses on its innerperiphery, 'and meansassociated with said shaft for engaging each ofsaid recesses.

4. In a shock compensator, the combination of ahousing including acylinder, an oscillatable shaft; a piston in said cylinder axially iisoscillatable upon oscillation of said shaft, and` `means interconnectingsaid piston and shaft,

said means including a frame pivotally secured to saidpiston andprovided with a plu' rality of bearing recesses on its inner periphv 5.In a shock compensator, the combination of a housing including acylinder, an oscillatlable shaft; a piston in said cylinder axiallyoscillatable upon` oscillationk of said sha-ft;

and means interconnecting saidf'piston vand shaft; said means includinga frame pivotallyy secured to said'pistonand provided with a` ery, andmeans associated with said shaft for f respectively engaging saidrecesses.

bearing recess normally on a line with theV aXes of said shaft and thepoint of pivotal support of said frame, and other bearing recessesspaced symmetrically on opposite sides of said line of axes; and meansassociated with said shaft for engagingeach of said recesses.

G. In a shock compensator, the combination of a housing including acylinder, an oscillatable shaft; a piston in said cylinder axiallyoscillatable upon oscillation of said shaft; and means interconnectingsaid piston and shaft; said means includinga frame pivotally secured tosaid piston and provided with a bearing recess diametrically opposed toits point of pivotal support; and other bearing recesses spacedsymmetrically on opposite sides of a line joining said firstnamed-bearing recess and said point of pivotal support; and meansassociated with said' shaft forengaging each of said recesses.

7. In a shock compensator, the combination of a housing including` acylinder, an oscillatabl'e shaft; a piston in said cylinder axiallyoscillatable upon oscillation of said shaft; and means interconnectingsaid piston and shaft; said means including a frame pivotallysecured-,to said piston and providedwith three bearing recesses on itsinner periphery, and meansassociated with said shaft in engagement Withone of said recesses and selec-V tively movable into and out ofengagement With the other of said recesses upon rotation of said shaft.v

8. In a shock compensator, the combination of a housing including acylinder, an oscillatable shaft; a piston in said cylinder axiallyoscilla-table upon oscillation of said shaft; and means interconnectingsaid piston and shaft gsaid means including a frame pivotally securedftosaid piston and provided Withv a bearing recess normally on aline Withthe axes of said shaft and the point of pivotal support of said frame,and other bearing recesses spaced symmetrically on opposite sides` ofsaid lines of axes; and means associated With said shaft in engagementWith said first named recess, and other means associated with said shaftselectively engaging either of said last namedv recesses upon rotationof said shaft.

Signed by me this 8th day of November,

lese.-A

JOHN M. KELLER.

